Automatic fire extinguisher sprinkler



March 8,. 1938. H. D. COOPER AIjTOMATIC FIRE EXTINGUISHER SPRINKLER Filed July 22,1936 .4

- 3nventor I]. l2] [7 7 Harry Cooper Gttorneg Patented Mar. 8, 1938 UNITED STATES PATENT OFFICE AUTOMATIC FIRE EXTINGUISHER SPRINKLER Harry D-. Cooper,

Application July 22,

1 "Claim.

This invention relates primarily to a fire extinguisher, and more particularly to an individual type of extinguisher which is intended to be mounted within a room, and which is automatic in its action.

The principle involved is that of the wellknown sprinkler system whereby the Water or liquid is automatically released by a fuse that is melted by'the'heat of the fire, but such systems are expensive to install. and areintende'd for large buildings.

There have also been made individual extinguishers of the soda-acid type which are hung up when not in use, and when a fire occurs, are taken down and inverted, whereby upon the acid and soda being mixed, a gas pressure is generated and the mixture directed upon the fire, but such devices are not automatic in their action and require manual operation.

The object of the invention is to provide an individual automatic fire extinguisher that is simple in construction durable, efiicient, and fully automatic in its action.

Another object of the invention is to provide a device of this class that may be mounted in a room and which will upon the melting of a fuse distribute the chemical over a large area of the entire room in the form of a spray or gas, depending upon the nature of the fire extinguishing chemicals employed in the device.

Another object of the invention is to provide a. device of this class that may be used with either a liquid or a compressed gas.

Another object of the invention is to provide a device of this class that may be readily and quickly reloaded after it has been used.

With these and other objects in view, my invention consists in certain novel construction and combination of parts as will hereinafter be fully described and claimed and further illustrated in the accompanying drawing which forms a part hereof, and in which like figures of reference refer to corresponding parts in all of the views, and it is understood that slight changes may be made without departing from the spirit of the invention.

In the drawing:

Figure 1 is a side elevation of the device, shown in a non-operative position.

Figure 2 is a front elevation of the same.

Figure 3 is a view similar to Figure 1, but shows the device in an operative position, after the fusible link has been melted.

Figure 4 is an enlarged vertical sectional view Poughkeepsie N. Y.

1936, Serial No. 91,937

of the chemical container showing the detailed construction and arrangement of the parts.

Figure 5 is a partial detail view showing the operation of the valve.

Figure 6 is an enlarged sectional view taken on the line 66 of Figure 2, showing the spring for rotating the container.

Figure 7 is an enlarged sectional view taken on the line 7-1 of Figure 2, showing one of the bracket arms, bearings, and the spring.

Referring to the drawing:

The device comprises a mounting bracket Iii designed to be attached to a wall, post, or ceiling of a room, and is formed with two supporting arms H and I2, the other ends of which terminate in the split rings [3 which are contracted by the bolts I4.

Within these rings [3 are clamped the bearing blocks i5 and I6 having the ball bearingsl1. The bearing block I5 is formed with a drum I8 within which is mounted a fiat spiral spring 19 having one end secured to said drum l8 as at 20, and the other end to a collar 2| as. at 22; said collar 2| being secured by a key 23 to the shaft 24 in such a manner that the collar 2| rotates with the shaft 24 while the drum I8 is held rigid by the bearing block l5.

The chemical container 25 may be of any desired shape and size and is provided with the aligned trunnions 26 and 21 by which it is rotatably mounted in one of the bearings H; the trunnion 26 having the end slotted as at 28 by which it is secured to the tongued end 29 of the shaft 24 in such a manner that by removing the block I5 from the ring I3, the container may be removed from the bracket if desired or the spring l9 wound up.

The discharge end of the chemical container 25 is provided with a discharge pipe 30 extending into the container 25 and communicating with a holder 3i designed to contain either the usual acid bottle or a compressed gas capsule, and to the lower end of the pipe 30 is freely rotatably secured a spinner 32 mounted on an adjustable pivot pin 33 threaded into a cage 34 attached to the container in such a manner that the liquid or gas vapor escaping through the pipe 30' will contact with, rotate, and be discharged over a large area by the spinner 32.

The filler end of the container 25 is formed with a neck 35 threaded for a closure cap 36 within which is slidably mounted a pin or plunger 31 formed with a point 38 by which the gas capsule in the holder 3| may be pierced to allow the gas to escape; the plunger 37 being normally retained in an outwardly extended position by a spring 39 located in the gland 4|] which is threaded into the cap 36, but should the usual acid bottle be used, this plunger will not be required.

As shown in Figure l, the chemical container 25 is normally held in the bracket II) in a non-operative position; that is, with the filler end up and the discharge end down, and is retained in this position by a dog 4| which is rigidly secured to the outer end of the shaft 24, and the rotation of the container 25 is limited to 180 degrees by a stop 42 secured to the drum I8.

The container 25 is rotated against the pressure of the spring l9 into the position shown in Figure 1, and the dog 41 is engaged by the lower end of a latch 43 pivoted as at 44 to the ring I3; the upper end of this latch 43 being bifurcated as at 45 and engaging an annular groove 46 in a link 41 of fusible material which is renewably and adjustably mounted in a clamp 48 extending upward from the arm I I by a set screw 5!].

It will be readily seen, that the container 25 having been charged with soda water and an acid bottle placed in the holder 3i and held in the non-operative position shown in Figure 1 with the latch 43 engaging with the dog M to retain the container 25 from rotation as urged by the spring 19 and the latch 43 being held by the head of the link 41, then when said head or any part of the link 41 fuses or melts due to the rise in temperature caused by a fire, the latch 43 will be released and in turn release the dog 4! and allow the container 25 to be rotated and reversed, mixing the acid with the soda and creating a pressure to expel the chemical through the spinner 32.

Should a compressed gas capsule be used and mounted in the holder 3| an anvil 49 is mounted on the bracket I0 in the path of the plunger 31 as the container rotates, striking the end of the plunger 31 and forcing its pointed inner end to puncture the gas capsule allowing the gas to escape into the container 25 and out through the pipe and spinner 32.

' Having thus described my invention, what I claim is new and desire to secure by Letters Patcut, is:

In an automatic fire extinguisher of the class described comprising a mounting bracket formed with two arms provided with bearings in the ends thereof, a fire extinguishing medium container provided with aligned trunnions rotatably mounted in said bearings, a spring for urging the rotation of said container in one direction only, and a stop for limiting said rotation, a heat-fusible latch for retaining said container in a normally non-operative position, and by the fusing of said latch allowing the container to rotate as urged by said spring and limited by said stop, a capsule containing compressed gasmounted in said container, a sprayer member mounted on said container, a plunger mounted in said container in axial relation to the sprayer, and means mounted on the bracket in the path of the plunger for causing it to puncture the capsule as the container rotates to discharge the extinguishing medium through the sprayer.

HARRY D. COOPER. 

